[LtWorf]

Phones don't have any I/O and android is a pain in the ass to experiment with. Plus by default it will do things like powersave.

[NoGravitas]

If I could install PostmarketOS (and a close-to-mainline kernel?) on one of my old smartphones, I'd rather use that for my cyberdeck project than a Pi. I'm not prepared to do a pmos bring-up on an unsupported phone, though.

[LtWorf]

Good luck with that, I think the chance that your phone is supported and works are very slim unless you bought it on purpose for that.